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;;; Consfigurator -- Lisp declarative configuration management system
;;; Copyright (C) 2020-2021 Sean Whitton <spwhitton@spwhitton.name>
;;; This file is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3, or (at your option)
;;; any later version.
;;; This file is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
(in-package :consfigurator.connection.local)
(defmethod establish-connection ((type (eql :local)) host &key)
(make-instance 'local-connection))
(defclass local-connection (lisp-connection)
()
(:documentation "The root deployment: applying properties to the machine the
root Lisp is running on, as the root Lisp's uid."))
(defmethod connection-run ((c local-connection) cmd (s stream))
;; see https://gitlab.common-lisp.net/asdf/asdf/-/issues/59
(call-next-method c cmd `(,s :element-type ,(stream-element-type s))))
(defmethod connection-run ((c local-connection) cmd (s string))
(call-next-method c cmd (make-string-input-stream s)))
(defmethod connection-run ((connection local-connection) shell-cmd input)
(multiple-value-bind (output _ exit-code)
;; call sh(1) so we know we'll get POSIX
(run-program `("sh" "-c" ,shell-cmd)
:input input :output :string
:error-output :output :ignore-error-status t)
(declare (ignore _))
(values output exit-code)))
(defmethod connection-readfile ((connection local-connection) path)
(read-file-string path))
(defcfun "umask" :int (mode :int))
;; TODO this is not safe if there are multiple threads
(defmacro with-umask ((umask) &body forms)
(with-gensyms (old)
`(let ((,old (umask ,umask)))
(unwind-protect
(progn ,@forms)
(umask ,old)))))
(defmethod connection-writefile ((connection local-connection)
path
(contents string)
umask)
(with-umask (umask)
(with-open-file (stream path :direction :output :if-exists :supersede)
(write-string contents stream))))
(defmethod connection-writefile ((connection local-connection)
path
(contents stream)
umask
&aux
(type (stream-element-type contents)))
(with-umask (umask)
(with-open-file (stream path :direction :output
:if-exists :supersede
:element-type type)
(copy-stream-to-stream contents stream :element-type type))))
(defmethod connection-upload ((connection local-connection) from to)
(copy-file from to))
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